lisp: Move to plugin

Type: refactor

Change-Id: I54df533a8f863c4e49742903cf2457f18b4fc506
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 339 insertions, 0 deletions

diff --git a/src/plugins/lisp/lisp-gpe/lisp_gpe.h b/src/plugins/lisp/lisp-gpe/lisp_gpe.h
new file mode 100644
index 00000000000..aa2e7d1bfbf
--- /dev/null
+++ b/src/plugins/lisp/lisp-gpe/lisp_gpe.h
@@ -0,0 +1,339 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * @file
+ * @brief LISP-GPE definitions.
+ */
+
+#ifndef included_vnet_lisp_gpe_h
+#define included_vnet_lisp_gpe_h
+
+#include <vppinfra/error.h>
+#include <vppinfra/mhash.h>
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/l2/l2_input.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/udp/udp.h>
+#include <lisp/lisp-cp/lisp_types.h>
+#include <lisp/lisp-gpe/lisp_gpe_packet.h>
+#include <vnet/adj/adj_types.h>
+#include <vppinfra/bihash_24_8.h>
+#include <vppinfra/bihash_template.h>
+
+/** IP4-UDP-LISP encap header */
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+  ip4_header_t ip4;             /* 20 bytes */
+  udp_header_t udp;             /* 8 bytes */
+  lisp_gpe_header_t lisp;       /* 8 bytes */
+}) ip4_udp_lisp_gpe_header_t;
+/* *INDENT-ON* */
+
+/** IP6-UDP-LISP encap header */
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+  ip6_header_t ip6;             /* 40 bytes */
+  udp_header_t udp;             /* 8 bytes */
+  lisp_gpe_header_t lisp;       /* 8 bytes */
+}) ip6_udp_lisp_gpe_header_t;
+/* *INDENT-ON* */
+
+#define foreach_lisp_gpe_ip_input_next          \
+_(DROP, "error-drop")                           \
+_(IP4_INPUT, "ip4-input")                       \
+_(IP6_INPUT, "ip6-input")                       \
+_(L2_INPUT, "l2-input")
+
+/** Enum of possible next nodes post LISP-GPE decap */
+typedef enum
+{
+#define _(s,n) LISP_GPE_INPUT_NEXT_##s,
+  foreach_lisp_gpe_ip_input_next
+#undef _
+    LISP_GPE_INPUT_N_NEXT,
+} lisp_gpe_input_next_t;
+
+/* Arc to nsh-input added only if nsh-input exists */
+#define LISP_GPE_INPUT_NEXT_NSH_INPUT 4
+
+typedef enum
+{
+#define lisp_gpe_error(n,s) LISP_GPE_ERROR_##n,
+#include <lisp/lisp-gpe/lisp_gpe_error.def>
+#undef lisp_gpe_error
+  LISP_GPE_N_ERROR,
+} lisp_gpe_error_t;
+
+typedef struct tunnel_lookup
+{
+  /** Lookup lisp-gpe interfaces by dp table (eg. vrf/bridge index) */
+  uword *hw_if_index_by_dp_table;
+
+  /** lookup decap tunnel termination sw_if_index by vni and vice versa */
+  uword *sw_if_index_by_vni;
+
+  // FIXME - Need this?
+  uword *vni_by_sw_if_index;
+} tunnel_lookup_t;
+
+typedef struct
+{
+  u32 fwd_entry_index;
+  u32 tunnel_index;
+} lisp_stats_key_t;
+
+typedef struct
+{
+  u32 vni;
+  dp_address_t deid;
+  dp_address_t seid;
+  ip_address_t loc_rloc;
+  ip_address_t rmt_rloc;
+
+  vlib_counter_t counters;
+} lisp_api_stats_t;
+
+typedef enum gpe_encap_mode_e
+{
+  GPE_ENCAP_LISP,
+  GPE_ENCAP_VXLAN,
+  GPE_ENCAP_COUNT
+} gpe_encap_mode_t;
+
+/** LISP-GPE global state*/
+typedef struct lisp_gpe_main
+{
+  /**
+   * @brief DB of all forwarding entries. The Key is:{l-EID,r-EID,vni}
+   * where the EID encodes L2 or L3
+   */
+  uword *lisp_gpe_fwd_entries;
+
+  /**
+   * @brief A Pool of all LISP forwarding entries
+   */
+  struct lisp_gpe_fwd_entry_t_ *lisp_fwd_entry_pool;
+
+  /** Free vlib hw_if_indices */
+  u32 *free_tunnel_hw_if_indices;
+
+  u8 is_en;
+
+  /* L3 data structures
+   * ================== */
+  tunnel_lookup_t l3_ifaces;
+
+  /* L2 data structures
+   * ================== */
+
+  /** L2 LISP FIB */
+    BVT (clib_bihash) l2_fib;
+
+  tunnel_lookup_t l2_ifaces;
+
+  /** Load-balance for a miss in the table */
+  dpo_id_t l2_lb_cp_lkup;
+
+  /* NSH data structures
+   * ================== */
+
+    BVT (clib_bihash) nsh_fib;
+
+  tunnel_lookup_t nsh_ifaces;
+
+  const dpo_id_t *nsh_cp_lkup;
+
+  gpe_encap_mode_t encap_mode;
+
+  u8 *placeholder_stats_pool;
+  uword *lisp_stats_index_by_key;
+  vlib_combined_counter_main_t counters;
+
+  /** Native fwd data structures */
+  fib_route_path_t *native_fwd_rpath[2];
+  u32 *native_fwd_lfes[2];
+
+  /** convenience */
+  vlib_main_t *vlib_main;
+  vnet_main_t *vnet_main;
+  ip4_main_t *im4;
+  ip6_main_t *im6;
+  ip_lookup_main_t *lm4;
+  ip_lookup_main_t *lm6;
+} lisp_gpe_main_t;
+
+/** LISP-GPE global state*/
+extern lisp_gpe_main_t lisp_gpe_main;
+
+always_inline lisp_gpe_main_t *
+vnet_lisp_gpe_get_main ()
+{
+  return &lisp_gpe_main;
+}
+
+
+extern vlib_node_registration_t lisp_gpe_ip4_input_node;
+extern vlib_node_registration_t lisp_gpe_ip6_input_node;
+extern vnet_hw_interface_class_t lisp_gpe_hw_class;
+
+u8 *format_lisp_gpe_header_with_length (u8 * s, va_list * args);
+
+/** Read LISP-GPE status */
+u8 vnet_lisp_gpe_enable_disable_status (void);
+
+u32
+lisp_gpe_l3_iface_find_or_create (lisp_gpe_main_t * lgm,
+				  u32 overlay_table_id, u32 vni);
+
+/** Add/del LISP-GPE interface. */
+extern void lisp_gpe_del_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id);
+extern u32 lisp_gpe_add_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id);
+extern void lisp_gpe_del_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id);
+extern u32 lisp_gpe_add_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id,
+				  u8 with_default_route);
+
+
+typedef struct
+{
+  u8 is_en;
+} vnet_lisp_gpe_enable_disable_args_t;
+
+clib_error_t
+  * vnet_lisp_gpe_enable_disable (vnet_lisp_gpe_enable_disable_args_t * a);
+
+typedef enum
+{
+  NO_ACTION,
+  FORWARD_NATIVE,
+  SEND_MAP_REQUEST,
+  DROP
+} negative_fwd_actions_e;
+
+/** */
+typedef struct
+{
+  /** forwarding entry index of */
+  u32 fwd_entry_index;
+
+  u8 is_src_dst;
+
+  u8 is_add;
+
+  /** type of mapping */
+  u8 is_negative;
+
+  /** action for negative mappings */
+  negative_fwd_actions_e action;
+
+  /** local eid */
+  gid_address_t lcl_eid;
+
+  /** remote eid */
+  gid_address_t rmt_eid;
+
+  /** vector of locator pairs */
+  locator_pair_t *locator_pairs;
+
+  /** FIB index to lookup remote locator at encap */
+  u32 encap_fib_index;
+
+  /** FIB index to lookup inner IP at decap */
+  u32 decap_fib_index;
+
+  /* TODO remove */
+  u32 decap_next_index;
+
+  /** VNI/tenant id in HOST byte order */
+  u32 vni;
+
+  /** vrf or bd where fwd entry should be inserted */
+  union
+  {
+    /** table (vrf) id */
+    u32 table_id;
+
+    /** bridge domain id */
+    u32 bd_id;
+
+    /** generic access */
+    u32 dp_table;
+  };
+} vnet_lisp_gpe_add_del_fwd_entry_args_t;
+
+typedef struct
+{
+  fib_route_path_t rpath;
+  u8 is_add;
+} vnet_gpe_native_fwd_rpath_args_t;
+
+typedef struct
+{
+  u32 fwd_entry_index;
+  u32 dp_table;
+  u32 vni;
+  u8 action;
+  dp_address_t leid;
+  dp_address_t reid;
+} lisp_api_gpe_fwd_entry_t;
+
+#define foreach_lgpe_ip4_lookup_next    \
+  _(DROP, "error-drop")                 \
+  _(LISP_CP_LOOKUP, "lisp-cp-lookup")
+
+typedef enum lgpe_ip4_lookup_next
+{
+#define _(sym,str) LGPE_IP4_LOOKUP_NEXT_##sym,
+  foreach_lgpe_ip4_lookup_next
+#undef _
+    LGPE_IP4_LOOKUP_N_NEXT,
+} lgpe_ip4_lookup_next_t;
+
+#define foreach_lgpe_ip6_lookup_next    \
+  _(DROP, "error-drop")                 \
+  _(LISP_CP_LOOKUP, "lisp-cp-lookup")
+
+typedef enum lgpe_ip6_lookup_next
+{
+#define _(sym,str) LGPE_IP6_LOOKUP_NEXT_##sym,
+  foreach_lgpe_ip6_lookup_next
+#undef _
+    LGPE_IP6_LOOKUP_N_NEXT,
+} lgpe_ip6_lookup_next_t;
+
+u8 *format_vnet_lisp_gpe_status (u8 * s, va_list * args);
+
+lisp_api_gpe_fwd_entry_t *vnet_lisp_gpe_fwd_entries_get_by_vni (u32 vni);
+gpe_encap_mode_t vnet_gpe_get_encap_mode (void);
+int vnet_gpe_set_encap_mode (gpe_encap_mode_t mode);
+
+u8 vnet_lisp_stats_enable_disable_state (void);
+vnet_api_error_t vnet_lisp_stats_enable_disable (u8 enable);
+lisp_api_stats_t *vnet_lisp_get_stats (void);
+int vnet_lisp_flush_stats (void);
+int vnet_gpe_add_del_native_fwd_rpath (vnet_gpe_native_fwd_rpath_args_t * a);
+u32 vnet_lisp_gpe_add_nsh_iface (lisp_gpe_main_t * lgm);
+void vnet_lisp_gpe_del_nsh_iface (lisp_gpe_main_t * lgm);
+
+#endif /* included_vnet_lisp_gpe_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */